I'm afraid there's a problem with...
B2Politely pointing out an issue.
I was hoping for...
B2Expressing a wish or expectation that wasn't met.
Perhaps we could...
B2Suggesting an alternative or improvement.
I'd appreciate it if...
B2Politely requesting a change or action.
Could we possibly...
B2Politely suggesting a change or alternative.
I'm not sure I understand...
B2Politely asking for clarification.
I think there might be a misunderstanding...
B2Suggesting a miscommunication.
I'm finding it a little difficult to...
B2Expressing difficulty with a task or situation.
Just to clarify...
B2Seeking confirmation or clarification.
I'm having a bit of trouble with...
B2Expressing a minor problem or difficulty.
It seems there's been a slight error...
B2Politely pointing out a mistake.
I was under the impression that...
B2Correcting a misconception.
With respect...
B2Politely disagreeing or expressing concern.
If I may say so...
B2Politely expressing an opinion.
I'm slightly disappointed with...
B2Expressing mild disappointment.
I'm not sure this is quite right...
B2Expressing doubt or concern about something.
I'd like to gently suggest...
B2Offering a suggestion in a delicate manner.
I have a small concern regarding...
B2Expressing a minor worry or apprehension.
I feel it might be beneficial to...
B2Suggesting something helpful.
I'm afraid I have a few questions about...
B2Politely asking for clarification on multiple points.
This might sound a little odd, but...
B2Introducing a potentially unusual or unexpected complaint.
I'm just wondering if...
B2Politely inquiring about something.
I'm a little concerned that...
C1Expressing mild worry or apprehension.
I have to say, I'm not entirely satisfied with...
C1Expressing dissatisfaction in a measured way.